I don't know for sure if that update to 5.5.4.9j screwed up my 5341j or not, but that's about the time my modems started having problemsThe power light was on solid, the DS light was flashing blue, the us light was flashing green and the online was flashing green and no link light hooked to the router or directly to the computer.I could do a hard reset and it would be normal for about 10 minutes then start all over with that light pattern.Zoom tech support is a joke and beings I only had the modem for 5 days, it's going back to Amazon.I may have got a bad modem, but I didn't have any problems until that update, maybe just a coincidence

I am wondering if I didn't get a bad one also. Every 2-3 days like clock work it drops off line around 1 am and won't recover on it's own. I have to power cycle it to come back up. Sometimes the US blue light flashes continously even though I have connectivity. It needs a hard reset to correct that. If the firmware update corrects it I'll be happy, if not, I'll revert to my SB6120 and try a 8x4 motorola if they get approved soon.

I too had 2 upstream channels locked at 44.8. dBmV so I know that wasn't the problem with the modem.Over all I have excellent signals.I too will be going with the Motorola 6141 that is 8x4 as soon as Comcast puts that on their approved list.I will stay with a name that I have used for years with no problems.

Failed Firmware Upgrade Attempts

Try using the recessed reset button on the rear. It's in a small hole. You can use a pen tip. Depress and hold it in until you see the front panel indicator lights begin to cycle, then release. Now give the modem the time it needs to completely re-sync with the CC system. This worked for me to help pull the firmware update.

Re: [Connectivity] Zoom 5341j firmware upgrade.

Just got a e-mail back from the people who do the testing and approving of modems.He said the Motorola SB 6141 which is a 8x4 D3 modem is in testing now and once it passes all their testing it will be placed on the approved list.He really couldn't give a time frame though.

I got the firmware update also,and after I got upstream bonding for the first time.I also have a blinking blue U.S. Light,but everything is working ok,good speeds and ping,and 2 locked channels.

Have you reset the modem? Because I swear I heard people before talk about connection working fine with blinking ds or us light. Once they reset the modem via the reset button, the blinking light stopped. So maybe try doing a 45 second reset via reset button.

Re: Failed Firmware Upgrade Attempts

In my case, the reason for the failed firmware upgrades was a wrong config file being sent. I have a 5341J, but Comcast was sending a config for a Zoom 5241. ComcastSteve updated the config file and the firmware upgrade succeeded. Thanks, Steve!

I have tried the reset button a number of times,but US light still blinks.

Mine's been doing that on and off for a couple of months now, it doesn't affect anything though, so I don't worry too much about it. I haven't received any firmware updates on mine here either, mine is still on 5.5.4.4J .

Edit-Update, I powered it off and back on again, and now have the new software-